So what has this got to do with the bread on Abiba’s plate? Until deregulation, the price for food was set by the forces of supply and demand for food itself. (This was already deeply imperfect: it left a billion people hungry.) But after deregulation, it was no longer just a market in food. It became, at the same time, a market in food contracts based on theoretical future crops – and the speculators drove the price through the roof.

— Johann Hari: How Goldman gambled on starvation - Johann Hari, Commentators - The Independent